Top answers

Chemistry
A Level

What is a ligand?

A species with one or more valence electron pairs that forms co-ordinate bonds with a metal ion. 

UY
Answered by Umamah Y. Chemistry tutor
3915 Views

Providing reasoning, what is the trend in the atomic radius of row 3 elements across the periodic table?

Decreasing atomic radius across the periodic table.

- greater number of protons in the nucleus resulting in a greater nuclear charge.

- little/no change in ...

JS
Answered by Jenny S. Chemistry tutor
3731 Views

How do mass spectrometers measure the mass of a compound?

Mass spectrometry is a method of identifying the molecular mass of compounds by measuring its mass to charge ratio. Methods vary depending on the molecules being analysed, th...

ES
Answered by Eduardo S. Chemistry tutor
3402 Views

Explain electrophilic aromatic substitution?

Electrophilic aromatic substitution (SEAr) is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by ...

DJ
Answered by Dafydd J. Chemistry tutor
3773 Views

Why is phenylamine a weaker organic base than ethylamine?

Phenylamine contains a phenyl group attached to the amine. Phenyl groups have a delocalised system of electrons as a result of p orbitals from the 6 adjacent carbon atoms overlapping and "merging&quo...

AW
Answered by Adam W. Chemistry tutor
32218 Views

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